This Tecnifibre NRG2 is one of the most comfortable and responsive strings. High-quality multifilament string offering a nice balance between comfort and dynamic performance. The SPL processing (anti-abrasion) increases its lifespan by reducing the friction level on the strings. Another reason for NRG2's large following is power, which is ideal for players with short to medium strokes. This string offers superior feel, power, and playability.